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Magnetic fields go to the maximum What is the maximum possible magnetic field allowed in our universe? According to two theoretical physicists in Russia and Israel, it is 1042 Gauss -- a value that is a billion times smaller than the previous estimate for the upper limit. As well as being of fundamental interest, the new finding -- if correct -- may rule out theories on "superconductive cosmic strings" and also some accepted mechanisms of producing other hypothetical objects such as magnetic monopoles (Phys. Rev. Lett.
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